Type-writing machine.



G. J. BARRETT.

TYPE WRITING MACHINE.

APPLIUATION FILED MAY 21,1908.

Patented Oct. 27, 1908. 3 SHEETS-SHEET 1.

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MWI/w W I-IIEATTDRNEY 4G.. J. BARRETT. TYPE WRITING MACHINE.

l APPLIOATIGN FILED KAY 21,1908. 27'

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MM @MM HIEATTURNEY G. J. BARRETT.

TYPE WRITING MACHINE.

APPLIUATION FILED MAY 21,1908.

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WITNESSES:

UNITED STATES PATENT OFFICE.

GLENN J. BARRETT, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE SMITH PREMIER TYPE- WRITER` COMPANY, OF SYRACUSE, NE

YORK. A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

`Specication of Letters Patent.

Patented Oct. 27, 1908.

To all whom it 'may concern:

Be it known that I, GLENN J. BARRETT, citizen `of the United States, and resident of Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type- VVriting Machines, of which the following is a specification.

My invention relates to typewriting machines and particularly to escapement mechanism for the carriages of such machines.

My invention is in the nature of an improvement on the escapement shown and described in .the application of John H. Barr filed April 7th, 1908, Serial No. 425,687 and it has for itsprincipal object to provide an escapement that is simple in construction and positive in its action and that affords a quick let-oil'I to the carriage.

A still further obJect of my invention is to provide means whereby the necessity of securing an equal leverage of all the typewriter key levers on the cscapement mechanism is avoided; `to provide such mechanism wherein the escapement will take place immediately upon the starting of the type bar backward after impinging no matter where the drop or disengagement of the normal retaining dog from the wheel occurs; to provide a positive means for accomplishing these results, and such other f further objects as will hereinafter appear.

To the above and other ends, my invention consists in certain features of construction and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a rear elevation showing so much of a typewriting machine as is necessary' to illustrate the application of my invention thereto. Fig. 2 is an enlarged isometric View of the preferred form of myvinvention. Figs. 3, 4 and 5 are top plan views of the escapement, the parts being shown in normal position in Fig. 3 and in Fi 4 in the position they occupy when a key 1s fully depressed, and in Fig. 5 in a position they occupy duringr the up-stroke o the key and after the escapement or let-off has taken place. In vFigs. 1 and 5 certain springs are omitted in order not to obscure the other parts. Fig. 6 is a fragmentary top view of mspring 12.

the connection between the universal bar or gate and the dog-carrying rock shaft. Fig. 7 is a fragmentary top plan view of part of a typewriter showing a modified form of escapement made in accordance with my invention, the parts being shown in normal position. Fig. S is a rear elevation of the same. Fig. J is a top view of some of the parts shown in Fig. 7, but shown in the positions they occupy when a key is fully depressed. Fig. 10 is a view similar to F ig. 9 but showing the. parts in positions they occupy during the upstroke of a key just after the scapement or' let-off has taken place. Fig. 11 is a rear view of part of the escapement shown in Fig. 7, the dogs being shown in section. Fig. 12 is a detail view of a wedge member forming part of the escapement shown in Fig. 7; Fig. 13 is a top plan view, partly in section, showing another modication. Fig. 14 is a rear elevation of the same. Fig. 15 is a fragmentary top plan view. showing feed dogs adapted for use in connection with the devices shown in Figs. 13 and 14.

My invention .is applicable to typewriting machines generally, but I have here shown it 'applied to a Smith Premier. typewr lier. The main frame of this machine compI ses side plates 1 having posts 2 rising therefrom and supporting an upper framework 3 which,'for convenience, will herein be designated as a top plate. The side plates 1 are connected together at the rear by a back plate 4. A carriage is mounted on the top plate in the usual manner and has a feed rack which is geared to an escapement wheel or rack 5 in such fashion that said wheel, when the carriage is moving in letter space direction, turns in the direction of the arrow in Fig. 1. The printing keys 6 are each connected to one of a series of rock shafts 7, each of which rock shafts has an arm that actuates a type bar. Each of the rock shafts also has an arm 8 which operates a universal bar or gate 9 in a well-known manner, moving said gate toward the left in Fig. 1. The gate 9 is mounted on links 10 which are pivoted at 11 to the back plate 4 and the universal har is restored to normal position by Y A hifurcated bracket 13, rising from the universal bar, is bent at its upper part toward the rear of the machine to embrace a grooved disk 14 which is mounted on an arm 15 projecting from a vertical rock shaft 16, which at its lower end 1s pivoted 1n the plate a and at its upper end is pivoted j some or journaled in the top plate 3. The construction is such that when a key is struck the rock shaft 16 is oscillated.

Above the top plate 3 a horizontally disposed plate-like arm 17 is rigidly mounted on the upper end of the shaft 16, and above the plate 17 two feed dogs 18 and 19 are pivotally mounted on the shaft and project therefrom toward the left of the operator into position for en agement with the escapement wheel 5. he dog 18 lies on top ofthe plate 17 and at its pivotal end the dog 19 lies on. top of the dog 18, both of said `dogs being pivoted on a shouldered and headed pivot screw 20 which is threaded into the upper end of the shaft 16. At itsfree or working end the dog 19 is depressed so as to bring the rear edge thereof in front of the forward edge of the dog 18 and so as to brin the working face of the dog 19 nearly, ut not quite, down to the level of the working face of the dog 18, so as to leave a slight drop. from the dog 19 to the dog 18. These two dogs are independently pivoted but they tend to move together, this tendency being due to a contractile spring 21 which-is connected at its ends to posts or pins 22 and 23 rising from the dogs 18 and 19, respectively. The relative motion 0f the two dogs under the impulse of the spring 21 is limited by the contact of the rear edge of the do 19 with the forward edge of the dog 18. e dog 18 hasfan arm 24 projecting therefrom toward the front of the machine and said arm has a rounded nose 25, the rounded edge of which contacts with the edge of aneccentric, or pivoted wedge or tal e-up device 26 which is pivoted to the plate 17 by a pivot screw 27. A post or pin 28 rises fronrthe arm 24 and the member 26 is provided with a similar pin 29 and said pins are connected by a contractile spring 30 which normally maintains the nose 25 pressed against the end of the pivoted takeup member 26.

The free end of the wedge device 26 has a cut-out or notch therein, as indicated at 31, and the part 32 of the free edge of Said device is formed eccentric to the pivotal center of the device 26 so that said edge 32 is adapted to act like a wedge in taking up lost motion between the nose 25 and the pivot screw 27 as will more clearly appear presently. In the normal position of the parts the nose 25 is seated 1n the notch or:

cut-out 31 as indicated in Figs. 2 and 3.

The Wedge device 26 has a resetting arm 33 which is adapted to contact with an abutment consistin of a pin or arm 34 bent upward from a p atev 35 of sheet metal which is adjustably secured to the top plate 3 by screws 36 which are threaded into the ton and which pass through holes in the 35 of such dimensions as to admit of adjustment of the plate. The device 26 also has an arm 37 adapted to contact with the dog 18 to preventthe device from being accidentally turned ooo fai' about its pivot.

The dog 18 is formed with a stop projecv tion 38 which when a key is depressed is adapted to strike against the web of the es capemcnt wheel 5 and to arrest the forward motion of the dog. It will be noted that this forward projection is of such character as to admit of the dog 18 entering into only a slight engagement with a tooth 'of the escape! plate plate 111% wheel 5.

ien the )arts are in normal position7 as indicated in fig. 3, the dog 19 is in engagement with the wheel 5, the nose 25 rests in the notch 31 and the arm 33 is in contact with the iixed stop or abutment 34. lVhen a key is depressed the shaft 16 is rocked, carrying with it the plate 17 which is rigidly .secured to it. During the first part of the motion of the shaft the dog 18 moves with the shaft, being operated by the spring 30 acting on the arm- 24 of said dog, but the dog is arrested in its forward motion by the stop projection 38 before the shaft. 10 completes its forward stroke. During the remainder of the forward stroke of the shaft 16 and plate 17 the distance of the pivot screw 27 from the nose 25 is increased so that the device 26 moves to such a position as to bring the notch 31 thereof out of engagement with the nose 25 and to bring the eccentric edge 32 into 'Contact With said nose.

lt will be understood that as soon as the shaft begins its forward stroke the arm 33 moves away from the abutment 34C and whenV the dog 18 is arrested the device 26 is turned about pivot. 24 by thespring 30, which spring keeps the operative end of the wedge.

device pressed a amst the' nose 25 of the dog. Theextent to which the wedging device will be turned about its pivot will e end upon the extent of motion of the sha t 16 after the dog 18 is arrested. If the shaft has but little motion after said dog is arrested, the wedging device will move but little about its pivot whereas if there is a greater extent of additional motion of the shaft' the wedging device will drop to a greater extent toward the rear of the machine; and in any event Whatever amount of additional motion the shaft 16 may have over and above'the motion of the dog 18, this additional motion'will be automatically taken up by the Wedging device. YThe result is that whether vthe shaft 16 has moved comparativel far or comparatively little, the instant t e shaft begins its return stroke the Wedgin device will force thedog 18 to mov wit it, and will immediately move said og outof engagement with the escapement wheel. It will thus he seen that the point at whieh the eseapement or let-oli' takes piave in thv return .stroke ot' the parts iS uniform and is independent ot' the point in the forward stroke of the parts at whivh the "drop" occurred.

The extent ot motion ot the .shaft 1li may var v from ditt'vrvnt eauses: t'or example, the shaft is moved a little turther when a` key is etruek with eonsiderahle 'foree than it` iS when the kv)v is sti-nek more gently. .\loreover, if the several arms .Q do not have precisely the saine relation to the universal gate 9 some ot these arms will operate the universal har and turn the shaft a little further than others. lt will he seen that hy the use ot' the present eseajwment any tine and aveurate adjustment ot' eaeh ot' these arms S with relation to the universal har is rendered unneeessarjY as the vseapentent meehanism automat'iealljv adjustsl itself to any variations in the motion of the universal har. so that the eseapement takes` plaee at the Same point` in the upstrokv ot' the different keys even though said keys ma)v not take up the universal har at the .saine pointe, in their respective down strokes. As the stop 2% allows the dog to enter the wheel onlyY a very short` distance and as the dog l'iegins to move out of engagtL ment with the wheel in the very first. part of the return motion of the dog rocker, it will be seen that the eseapenient or leteoff takes plaee ver)Y earl)v in the return stroke of a key.

At their working ends the dogs 1S and 19 are spared apart a distante leas than the thiekness ot' a tooth ot' the wheel 5. 0n the return stroke ot the dog roeker the dog 1S is positiveljY moved out ot' engagement with the wheel and the dog 1t) is drawn after it hy the spring 21. AS the working face of the dog 19 is a` little higher than that of the dog 1S. the rear edge oi the dog 19 will Contaet with the forward fatte ot' the tooth of the eseapeinent` Wheel and said dog 19 will he arrested. the dog 18 moving on tovard the rear independently until the space between the two dogs is wide enough to let. the tooth pass thrmlgh. As soon as the tooth j'iasses the dogs. the dog 19 snaps in behind it under the impulse of. the spring 21 and ar rests the next sueeeeding tooth ot' the wheel. This operation, as has heen explained takes plaee during the first part ot the re turn motion of the dog roeker. s soon as the arm 33 strikes the abutment 2H on the return ehoke ot' they dog roeker the further motion said roeker restores the wedging deviee 2o to its normal position shown 1n Fig. 2%, and the nose 25 is drawn haelt into the noteh 31 hy the spring 30. Fig. 4 Shows the position ot' the parts when a key t'ull)r depressed and Fig. they oeeupjv just` after taken place and just as the arm 33 in its return stroke has reached the abutment 34. The remainder of the return above.

o shows the position j the eseapeinent.x has is omitted and instead thereof I mount a roller Yt() on the pin 2H. whieh roller is engaged hy the free end ot' the pivoted wedging deviee Qt in the same manner as the nose :5 in thv other form` said deviee 2G heing heut upward at its tree end in order to hri ng it into position to eoperate with the roller ttt. Said deviee 2G in this forni ot the invention is provided with a` forwardl),Y e.\'- tending arm 41. from whieh tht` pin :22) rises and said forwardly extending armhas a radiall)v disposed edge, lf2 whit-h eontaets with a pin 43 rising from the top plate l. This pin -t is a restoring pin to restore the pivoted wedging deviee to normal position during the latter part ot' the return stroke ot' the dog rocker in a manner whieh will loe un tlerstood t'roin the deaeription of the first form ot' the invention. In this form of the invention there is a evrtaiu amount of trie tion eansed hy the ruhhing ot' the edgfe Vl: against the pin 425 whivh is oliviaied in 'life preferred form shown in Figs. ietf. by leaf son ot' the t'aet that in said preferred form the ahutinent 2H issuhstantiallyY in alineinent with the venters of the serews T and Q0.

ln Fig. l1 l have illustrated some of the details ot' the mounting ot' the plate 1T and the dogs 1S and It). .its shown in this figure the serew 2t) is doubly shouldered or formed with annular steps #lat and 45. rThe step L14 is serewed down tight` againat.` t-he plate,y thus rigidly seeuring said plate to the top ot' the shaft. The dog 18 is pivote-d on this step 44 and is retained against displaeenient by the larger step 45, on whieh larger .step the dog 19 is pivot'ed and retained in position h v the head ot' the serew. A eap or eollar tti has a taper tit on the upper end of the` shaft 1t) in order to give a wider hearing surface for the plate 17. It will he under-- stood that the. mounting ot the dogs as shown in Fig. 1 may he the same as that shown in Fig. 11.

In Fig. 12 I have shown a detail view of the pivoted Wedging device. In this ligure fr is an are having radius b and its center at the center of the pivoty Screw 27, and d is an are including the edge 32, said arc d having radius e and renter f, the center f being f0rward. of the Center of the pivot screw. The angle or opening between the ares a' and d `Shows the wedging etteet of the eccentric stroke of the eontaetmg edge 32.

IGF

'thiev thc universal bar lhc lost motion between the dog and keys may be taken up at Some other point than that above described. In Figs. 13. 14 and 1f l have shown a form of my invention in which the shaft 16 itself is arrested when the holding dog' has moved a snliicient distanciiuto engagement with the wheele and whew1 the pivotcd Wedge or take-np member forms part of the connection between the univeraal bar tl and the .aha ft. In this 'torni of my invention the escapenicnt dog-1 may be made in any one of a variety of ways, the preferred construction-being shonn in Fig. 15. In this construction, the hol ing dog 18 is provided with a stop extension 38 as in the other forms of the invention, but said holding dog is rigidly mounted ou the Shaft 16. the plate 17 being; diepenaed with. The arm Q-'l and the member Lt alao are not used in this construction. The dog' 19 is pivoted on the Screw 20 and .is connected with the dog: 18 by the spring 21 as before. The shaft 16 has an arm or crank l-ttt which is controlied by a wedging arm or plate 1T. pivotcd on a screw 48 threaded into an car t9 bent back toward the rear of the machine from the upper part of a bracket 50 extending.r upward from the universal bar 9. This plate 4T has an eccentric contact edge 51 similar in disposition and functions to that of the eccentric edge HQ of the member Q6 in the other forme of the invention. the edge 51 being in contact 'with the cranhr 4o. A. f :outractile spring' :itl @muertal Said crank tti with a pin fili iinojccting from the plati- -1-7 in front of the Screw The construction is auch that when. b v the depreaeion o't' a key. the fate t) ia moved in the direction ot the arrow in t. the crank -tt ie drawn in the Hannl direction by the leprinrg' 52 until the shaft 'iti ie arrested by the conv tact ol' the stop 53S with the escapement wheel. thus; arresting the crank 4G. After continues ita motion Stretching' the spring 52 and moving the pivot A'tti to a greater distance from the crank Ltti. The plate 4T rocked about its; pivot` b v the spring' 552 to Whatever extent is necessary to take 'up this` additional motion of the `ate 9. When the key is released and the universal bar beging ite return motion the plate 4'( acts as a positive connection between the universal bar and the crank 4G. causing!` said crank to rock the shaft 1G during the tiretv part of the return motion of the universal bar. The free end of the plate 41' is formed with a cam edge 51 which on the return motion of thc universal bar contacte with the `ahaft 1G and cams the plate 46 back to the position shown 'in ltig'gj. lf Where it in arrested in normal position ready for another operation at the next depression o1' a key. It will be seen that this form of the invention worin; on the Same principle as the prior forms: but that the take-up of l scalar the lost motion occurs at a different point in the chain of connections between the keys and eecapement dogs.

I have referred in the accompanying claims to the forward and return stroke of the actuator, This docs not mean the direction of movement but nicanz'- the movenicnte of the actuator. universal har or gate. duringV the depression of a leyand during the return movement thereof rel'pectivcl y.

Vt'hat I claim as new and deaire to secure b v Lettersl Patent, iat-- 1. In a typewriting machine. escapcment dcvicce including' an actuator. a doegl movable with said actuator. Said dog and actuator alao heinz;r relatively movable. a device antomatically operative to take up the lost motion between the actuator and said dog. and means for resetting Said device operated directly by a return movement ol" the actuator.

t2. In a typewriting machinc and in escapement mechanism, the combination with a` dog and an actuator for said dog. said actuator being movable independently of eaid dog. of a wedge device for taking up -lost motion between said dog and said actuator. said Wedge device comprie'ing la pivoted piece having an eccentric edge which acta a wedge.

3. In atypewritingrr machine and in eScapement mechanism. the combination with a` dog and an actuator tor said dogg. f-'aid actuator being' movable indepcndent'ly of .aaid dog. of a wedge de'lvicc movabiy connecteiit with said actuator for taking up lost motion between Said dog' and said actuator, and a Stop against which said wedge device is moved by the actuator. Said atop cooperating with said wedge device to restore thc same to normal position relatively to A@aid dog.

-l-. Ina typen'ritingmachine and in escapeinent mechanism. the combination with a doe' and an actuatlii' for Said dog. Said actuator being,a movable independently of said dog'. of antun-armed piece pivoted to :said actuator. one of the arme of said piece having an eccentric edge which acts as a wedge to take up lost. motion betu'fain said dogr and eaid actuator, a part connected with Said dog and cooperating with Said eccentric edge. and a stop cooperating' with the other arm of `said pivoted piece to restore the same to normal position relativelyY to said dog,

5. ln a typewritin#r machine andin cecapenient mechanism. the coml'iination of a dog. an oerillatory dog! actuator movable independently of said dog'. an arm rigid on said actuator. an automatically operating Wedge device pivotcd to Said arm and operating to take up lost motion between -@aid actuator and said dog. and a fixed Stop for restoring' said Wedge device to normal position relatively to said 'dog'.

G. In a typewriting machine and in escapement mechanisn'i, the combination of two dogs, an actuator for said dogs. means 'for arresting both ot' said dogs before said actuator completes its fiu'ward stroke, an automaticallyY operatingr wedge derive for taliY ingupthc lostmotion between said dogs and Said actuator whereinr the dogs are started on` their return stroke when the actuator tirst begins its return strolc, and means tor automatically restoring said wedge det ice to non mal position. y

T. ln a typewritingmachine and in escape nient mechanism, the conibiiuition of a dog; an actuator for .said dogg: means for moving' said dogwith said actuator during: the first part. of the forward stroke of said actuator; means for arresting said dog` before said actuator cinnpletcs its forward stroke: an abutinout connected with said dogg; an autouniticall)7 operating wedge device co'iperating Vwith said abutment for taking up the lost motion between said log and said actuator whereby the do; is started on its return stroke when the artnator first begins its return strc-flic, said reallife device comprising; a pivoted member having an @centric edge which contacts with said abutment," and means for autoniatiialllv' restoring; wedge device to normal position.

S. ln a typewi u ing machine and in escape- Inent. mechanism, the combination of a dog, an actuator `for said dog. meansI for movingv said dog' with said actuator during;I the first part of the forward stroke of the latter, ineansn for arresting said flog bcforiA said actuator completes its forward stroke, an automatically operativo wedge derive for taking' up the lost motion lrctueen said dog and said actuator and for positively inorinn' said donl with said actuator dni-iin;r the first part of the ret urn strolazc of the actuator, and a fixed abutment against which said wedge device iinping'es during the latter part of the return stroke of the actuator, whereb' \v said wedge device is rcstorid to normal position relati\'el \,Y lo said dog.

9. Vl l1 a t \']'ic\\'riting machine and in cscapenient mechanism. the combination with an escapeincnt rack, of a feed dog, an actuator for said feed dog. a wedge device interposed between said actuator and said dog, a spring normally holding said dog in contact with said wedge device, means for arresting* said deff before said actuator completes its forward stroke, and means for arresting said wedge device before said actuator completes its return stroke, said wedge device operating automatically to take up the lost motion between the actuator and the dog during the. latter part of the forward stroke of the actuator and said wedge device being restored to normal position relatively to the feed dog' by the means which arrests i1 during the return stroke of thc actuator.

sa i d 10. In a typewriting machine and in escapcinent. mechanism, the combination with a rack, of a fccd dog, au actuator for said l'ced dog, means for arrestii'ig said don' betoi'c said actuator completes its forward strobe, a wedge device. spring means for pressing said wedge device and said don' together whereby said wedge device, is adapted to takc uplthe lost motion between the dog and the actuator during the latter part of the forward stroke of the actuator, and an abutment for restoring` said wedge device to normal position relatively to the dog during the latter part of the return stroke of the actuator.

11. In a typewriting machine and `in esL capement mechanism, the combination of a dog rocker, an arm rigidly mounted on said dog rocker, a feed dog pivotally'mounted on said dog' rocker, means for arresting said doggu before the dog rocker coniplctes its forward stroke, a springy pressed take-up device pivoted to said arm for taliiimr up the lost :notion between the dog and the dog,r rocker, and an adjustable `fixed abutment for restoring said take-up device, said abutment and the Apivotal centers of said take-up device and of said dog'roclier being substantialijiv in alineincnt.

12. In a typewritinif` machine, the combi-- nation of an oscillating dog carrier, cscaiiienient dogs movably mounted upon said dogg` carrier, a stop for limiting the oscillation of said dogs without limiting the oscillation of said denV carrier, a wedging arm pivotally mounted upon said dog carrier, an abutment on one of said escapcment dogs adapted to contact' with said wedging arm, a spring ex tcndinn from said wedg'ing arm at a point eccentric to the pivotal point of said` wedning arm and connected with said dog, and a stop for positioning said wedginfr arm on the dog' carrier.

ln a typewriting machine, the combination of an oscillating dog carrier, dogs movably mounted upon said dof.: carrier, nii-ans for holding `said dogs in normal relation to cach other, a stop for limiting1 the oscillation of said dogs without limiting the oscillation of said dog carrier, a swinging` arm pivotally mounted. upon said dog carrier, a roller carried by one of said escapenient dogs and adapted to contact With Said swinging arm, aspiring between s aid dog carrying' said roller and said swinging arm, and a stop for positioning said swinging arm on said dog carrier. t

1 4. In a typewriting machine, the combination of-an oscillating dog carrier, dogs movably mounted upon said dogr carrier, means for holding said d ogs in normal rela tion to each other, means for limitingr the oscillation of said dogs Without limiting 'the oscillation of said dei;r carrier, a swinging arm movably mounted upon said dog carrier and adapted to contact with one of said dogs in one direction before Said dog cardoge, a siringlietween said swinging arm and the `Ine of said dogs Which contacts with said swinging arm, and means fornormally pi tioning said swinging arm.

1.5. ln a typewriting machine, the combination of al1 oscillating dogl carrier, dogs movably mounted upon Said dogcarrier, a spring for moving said dogs with said dog carrier in one direction, a stop for limiting the motion of Said dogs in said one direction before Said dog carrier shall have coinpleted its motion, a. positive means for conmeetingr said one of said dogs to said dog carrier during the earlier part of the return movement ofSaid dog' carrier toward norA mal position, consisting of a Wedging arm pivotally mounted upon Said dog carrier and a spring adapted to force said wedging arm against one of Said dogs; and a suitable Stop for removingr the Wedging portion ot' said Wedging arm from the said one of said dogs when said dog carrier returns to normal position.

16. In a typewriting machine, the combination of anioscillating dog carrier, dogs movablyY mounted upon Said dog carrier, a spring for movingsaid dogs with said dop,r carrier in one direction, a stop for arresting' the movement of one of said dogs in 4one ldirection, and before said dog carrier completes its movement in the same direction. a wedging device carried by said dog carrier and adapted to Contact with one of said dogs when said dog carrier completes the tiret half of the movement, and a fixed stop for returning said Wedging' device to normal position on said dog carrier.

17. In a typewriting machine, the combination of an oscillating dog carrier, tWo dogs movable with and independently of said dog carrier, a spring for moving said dogs with Said dog carrier in one direction, a stop for arresting the movement of both of said rier completes its movement in the Same direction, an automatically operating wedgin means adapted. to contact with one ot' said dogsl when said dog carrier completes the first half of its movement. and means i`or returning said ivedging means to normal position.

18. In a` typewriting machine, the combination of an oscillating dog rocker, an escapement dog movable with and independently of aid dog rocker, a Spring for movinl said dog with said dog rocker in one direction. an automatically operating wedging device for movingI Said dog with Said dogl rocker in the opposite direction, means for arresting the movement of l@aid dog in one` direction independently of the Inovement of said dog rocker, meane` for forcing said wedging' device against Said dog when -eaid dog rocker reaches the limit of its movement in one direction, and a fixed stop for resetting said Wedging device when yQaid dog rocker returns to normal position.

19. In a typewriting machine, the combination of an oscillatingr dog carrier, two dogs movably mounted upon Said dog carrier, means for changing the relative position of both of said dogs with reference to said dog carrier toward the limitA of one movement of said dog carrier. a wedging means Carried by Said dog,r carrier for returning said dogs with Said dog carrier after the completion of said one movement thereof. and means for reeetting Said d-f upon said dog carrier.

Signed at Syracuse. in the count)i of Onondaga, and State ot' New York, thi, Nth da)Y ot ay A. D. 1908.

GLENN J. BARRETT.

iitnesses Y \ViLLi.\ \1 li. Sinni-zr, (i1-:onen M, BLOWERS. 

